impregnatory,a.|ɪmˈprɛgnətərɪ| [f. L. imprægnāt-, ppl. stem + -ory.] Having the function of impregnating. 1857Berkeley Introd. Cryptog. Bot. §178. 200 The spermatozoids..vary a little in shape... There can, however, be little doubt that they are truly impregnatory organs.